“Muhammad ibn Muslim once asked abu ‘Abd Allah (a.s.), when I was listening, about a traveler who thinks to stay for ten days. He (the Imam) said, ‘He is required to perform his Salah (prayer) as complete. If he does not know for how long he will stay, like for one or more, he can count to thirty days, then perform his Salah (prayer) as complete even if thereafter he stays for one day or one Salah (prayer).’ Muhammad ibn Muslim then said, ‘I am told that you have said it is five.’ He (the Imam) said, ‘Yes, I had said that.’ Abu Ayyub has said that he said, ‘I pray to Allah to keep my soul in service for your cause, can it be less than five?’ He (the Imam) said, ‘No, it cannot be less than five.’”