Tafsir of Al-Baqarah 2:201-203

222

That is, "It does not matter whether you return from Mina to Makkah on the 12th or the 13th of Dhul-Hijjah during the Tashriq days. The real thing that matters is not the number of days you stayed at Mina but whether you spent those days in establishing your relation with Allah during those days or in merry making."