What is the ruling on praying in a crooked row, and is it true that Allah does not look at a crooked row?

Prayer in a crooked row is valid, and straightening the rows is a confirmed Sunnah, not an obligation. What is popular among people, that Allah does not look at a crooked row, has no basis in any authentic or weak hadith. A Muslim should be keen on straightening the rows and advising worshippers about its importance.