1. Ali ibn Ibrahim has narrated from his father from Ibn Abi ‘Umayr from Hafs ibn af-Bakhtariy and others who has said the following
“Abu ‘ Abd Allah (a.s.), once asked one of his sons, ’Did you do Sa‘y (running slowly) in Wadiy Muhassar?’ He replied, ‘No, I did not do so.’ He (the Imam) commanded him to go back to perform Sa‘y (running slowly). His son said, ‘I do not know how to do it.’ He (the Imam) said, ‘Ask the people how to do it.’”