The ruling on the supplication mentioned in the hadith of Ibn 'Abbas after the prayer

Question:
He says: Honorable Shaykh, may Allah grant you success, is the supplication mentioned in the hadith of Ibn 'Abbas to be said after every prayer, whether it is voluntary or obligatory, or is it specific to the obligatory prayer?

Answer:
The obligatory prayer. Do not leave it out. I love you, O Mu'adh. The Messenger (peace and blessings be upon him) said: Do not leave out saying after every obligatory prayer: O Allah, help me to remember You, give thanks to You, and worship You in the best manner. The scholars differed on whether it is said at the end of the prayer, meaning at its conclusion before the taslim, or after the taslim. The matter is broad; if he says it after the taslim, it is the post-prayer dhikr, and if he says it at the end of the prayer, it is the post-prayer dhikr. However, some scholars, including Shaykh al-Islam Ibn Taymiyyah and Ibn al-Qayyim, hold that saying it at the end of the prayer is better, because supplication within the act of worship is better than supplication outside the act of worship. Yes.