Hadith 8:360
Abu Bakr narrated to us, he said: Hafs narrated to us, from Hajjaj, from Ata, who said regarding [the verse]: "And seven when you return": He said: If he wishes, he may fast them on the road, and if he wishes, he may fast them in Makkah.
حدثنا أبو بكر قال ثنا حفص عن حجاج عن عطاء قال @QB@ وسبعة إذا رجعتم @QE@ 1 قال إن شاء صامها في الطريق وإن شاء بمكة