From where can pebbles be collected?

The Sunnah is to collect the seven pebbles for the first day from Muzdalifah after departing from Mashʿar al-Haram, and no more than that from there. The twenty-one pebbles for each of the remaining three days may be collected from Mina itself. This is the best method. However, it is permissible to collect pebbles from anywhere within the Haram.