1. [1/112] al-Tahdhib: Muhammad b. Yahya from Muhammad b. al-Husayn from Abd al-Rahman b. Abi Hashim al-Bajali from Salim Abi Khadija from Abi Abdillah عليه السلام, he (Salim) said
a man asked [him] while I was present: I happen to enter the Masjid and one of our companions is praying the Asr prayer while another is praying Dhuhr [why this divergence]? He said: I ordered them to do that, if they were all to pray at one time they would be known and it would be off with their necks.