Muwatta Imam Malik Book of Prayer, Hadith 18

Yahya related to me from Malik from Ibn Shihab that AIi ibn Husayn ibn Ali ibn Abi Talib said, "The Messenger of Allah ﷺ used to say, 'Allah is greater' whenever he lowered himself and raised himself, and he continued to pray like that until he met Al lah ."

وَحَدَّثَنِي عَنْ مَالِكٍ، عَنِ ابْنِ شِهَابٍ، عَنْ عَلِيِّ بْنِ حُسَيْنِ بْنِ عَلِيِّ بْنِ أَبِي طَالِبٍ، أَنَّهُ قَالَ كَانَ رَسُولُ اللَّهِ ﷺ يُكَبِّرُ فِي الصَّلاَةِ كُلَّمَا خَفَضَ وَرَفَعَ فَلَمْ تَزَلْ تِلْكَ صَلاَتَهُ حَتَّى لَقِيَ اللَّهَ .