And peace and blessings be upon our Prophet Muhammad, and upon his family and all his Companions: He said (may Allah have mercy on him):

The reader: In the name of Allah, the Most Gracious, the Most Merciful.
Praise be to Allah, Lord of the worlds, and peace and blessings be upon our Prophet Muhammad, and upon his family and all his Companions:
He said (may Allah have mercy on him): "Chapter on the recommendation of clarifying speech and repeating it so that it is understood from him:
Anas (may Allah be pleased with him) reported:

the Prophet (ﷺ) said something, he would repeat his words thrice so that the meanings would be understood fully; and whenever he came upon a group of people, he would greet them, and he would repeat salutation thrice

أن النبي صلى الله عليه وسلم كان إذا تكلم بكلمة أعادها ثلاثاً حتى تفهم عنه، وإذا أتى على قوم فسلم عليهم سلم عليهم ثلاثا

Riyad as-Salihin 695

Al-Bukhari narrated it.
And Aisha (may Allah be pleased with her) said:

the speech of Messenger of Allah (ﷺ) was so clear that all those who listened to it would understand it

كان كلام رسول الله كلامًا فصلًا يفهمه كل من يسمعه

Riyad as-Salihin 696

Abu Dawud narrated it ".

The Shaykh : In the name of Allah, the Most Gracious, the Most Merciful:
The author al-Nawawi (may Allah have mercy on him) said in the book *Riyad al-Salihin: "Chapter on the recommendation of clarifying speech and repeating it until it is understood from him": This means that a person should, when he speaks and addresses people, speak to them with clear speech. He should not rush in throwing out words, nor slur anything, but his speech should be distinct, clear, and evident so that the listener understands without difficulty or burden. Some people are found to speak quickly and mumble in their speech, to the extent that a person needs to say, "What are you saying? What do you mean? Teach me," and the like. This is contrary to the Sunnah. The Sunnah is that speech should be clear and distinct so that the listener understands it. It is not obligatory that it be in formal Arabic (fusha), nor is it recommended if people criticize it and consider it an affectation. One should address people in his own language, but let his speech be clear and distinct, as in the hadith of Anas ibn Malik (may Allah be pleased with him): His statement: "until it is understood from him" indicates that if it is understood without repetition, he does not repeat it. This is the reality, for we hear many hadiths from the Messenger (peace and blessings be upon him) that he said in his sermons and gatherings, and he did not repeat them. But if a person does not understand because he does not know the meaning well, it is repeated to him until he understands, or if his hearing is heavy and he cannot hear, or if there is noise around you so he cannot hear, then it is recommended to repeat it until it is understood from you.
This means that he does not repeat more than three times. He greets once, and if no one responds, he greets the second time, and if no one responds, he greets the third time, and if no one responds, he leaves. Likewise, in asking for permission: The Prophet (peace and blessings be upon him and his family) would ask for permission three times. This means that when a person comes to ask for permission at a house, he knocks on the door three times. If no one responds, he departs. This is part of his Sunnah (peace and blessings be upon him): to repeat matters three times and then stop. Is it the same with the telephone? If the telephone rings three times, do you hang up? It is possible that this falls under this category, and that if you call a person and the bell rings three times and you hear it but no one responds, you are free to hang up the telephone. It is also possible to say that the telephone should be left until you despair of the people of the house, because they may not be near the telephone when it rings. They may be at the other end of the place and need to take steps, and the telephone repeats the sound quickly. Therefore, it may be said that it is limited to three times, or it may be said that it is limited to the point where you despair of an answer, and that if it rings and rings many times and no one responds, you have despaired and you hang up the telephone.