وَعَنْهُ أَنَّ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ لَمَّا قَدِمَ الْمَدِينَةَ نَحَرَ جَزُورًا أَوْ بَقَرَةً
He told that when the Prophet (sallallahu alayhi wa sallam) came to Medina he slew a camel or a cow.* * There seems to be no certainty as to whether this refers to the arrival at the time of the Hijra, or whether the tradition means to indicate a general practice.
It is said that the sunna requires one who returns from a journey to provide such entertainment as is within his means. If the use of “or” in the tradition does not indicate a doubt on the part of the transmitter as to which word is correct, but is a real alternative, this would justify the view that the tradition speaks of a practice of the Prophet (sallallahu alayhi wa sallam).
But the Arabic construction really suggests one occasion rather than any time the Prophet (sallallahu alayhi wa sallam) came back to Medina.