Discussion of how apparent differences lead to internal differences, and the evidence for this from the hadith regarding straightening the rows

The Shaykh : The Messenger (peace and blessings be upon him) derived from this and explicitly stated a very serious issue: that if Muslims differ in their outward appearance, which our Lord (Mighty and Majestic) has commanded to be uniform, this leads to differences in their inner selves and hearts. Among the evidence for this is the hadith in *Sahih* that the Prophet (peace and blessings be upon him), when he stood for prayer, would not say the takbir for the prayer until he had ordered the straightening of the rows. He had several phrases when he ordered people to straighten their rows, among which, related to our topic, is his saying (peace and blessings be upon him): .
This is a physical straightening, as is known in the practical Sunnah, where the Prophet (peace and blessings be upon him), when straightening the rows, would say to the one lagging behind: "Move forward," and to the one protruding with his body: "Move back and straighten." The Messenger (peace be upon him) commanded this straightening and linked the difference in it to the fact that it is a cause for the hearts of those who differ in straightening the row to differ. He said (peace and blessings be upon him): . Thus, he (peace and blessings be upon him) made the difference among Muslims standing in the row for the Lord of the Worlds a cause for difference to occur between them themselves in their hearts. This difference in the heart undoubtedly leads to the corruption of the Ummah and its weakness, and may lead to its complete disappearance. In reality, this is something that should draw the attention of scholars and students of knowledge to the fact that the cause of the weakness, humiliation, and disgrace of Muslims today, to the point that Allah (Mighty and Majestic) has subjected them to the most humiliated of nations, as attested by the Qur'an, is their distance from the Shari'ah, sometimes in understanding, sometimes in practice, and sometimes in both understanding and practice. Many people never realize that a Muslim's rectification of his outward appearance is one of the obligations that Islam has encouraged and commanded Muslims to perform. They believe that these matters, or the best of these people believe that these matters are formalistic and superficial, and that Islam does not assign them great weight.