[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.

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[1/112] التهذيب: محمد بن يحيى عن محمد بن الحسين عن عبدالرحمن بن أبي هاشم البجلي عن سالم أبي خديجة عن أبي عبدالله عليه السلام قال: سأل انسان وأنا حاضر فقال: ربما دخلت المسجد وبعض أصحابنا يصلي العصر وبعضهم يصلي الظهر فقال: انا أمرتهم بهذا لو صلوا على وقت واحد لعرفوا فأخذوا برقابهم