Stand in straight rows when praying and say "Allah is most great".

The Prophet Muhammad's teachings on prayer are an important part of the Islamic faith. In this hadith, he instructs his followers to stand in straight rows when they pray and then say "Allah is most great" afterwards. This teaches us that we should be orderly and organized when we pray and that we should remember God's greatness at all times. It also reminds us of the importance of following the teachings of our beloved Prophet Muhammad who showed us how to live a life devoted to God. We can learn from this hadith that it is important for us to be mindful of our actions during prayer and always remember God's greatness in everything we do.