One Joining a Row, Alone in One Row or Away From the Prayer Leader More Than One Step

2. Muhammad ibn ’Isma‘il has narrated from al-Fadl ibn Shadhan from Hammad ibn ‘Isa from Rib‘i from Muhammad ibn Muslim who has said the following: “I once asked him (the Imam) عليه السلام, ‘Can a man move backward in Salah (prayer)?’ He (the Imam) said, ‘No, he cannot do so.’ I then asked, ‘Can he move forward?’ He (the Imam) said, ‘Yes, as much as he wants to al-Qiblah (al-Ka‘bah).’”