Sayyiduna Salman (may Allah be pleased with him) narrates: "The prayer was made obligatory as two rak'ahs. So the Messenger of Allah (peace and blessings be upon him) prayed it (as two rak'ahs) in Makkah until he came to Madinah, and in Madinah too he continued to pray it like this for as long as Allah willed. Then two rak'ahs were added to the prayer of the resident, and the prayer of the traveller was left as it was."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from Asim except Amr bin Abd al-Ghaffar, and it is not narrated from Sayyiduna Salman (may Allah be pleased with him) except with this chain."
Hadith Referenceالمعجم الأوسط / باب الميم / 5409
Hadith Gradingمحدثین:إسناده ضعيف جدًّا، فيه عمرو بن عبد الغفار متروك
Hadith Takhrij«قال الهيثمي: وفيه عمرو بن عبد الغفار وهو متروك «مجمع الزوائد ومنبع الفوائد، ج 2، ص 156»»