It is narrated from Muhammad bin Ka'b (may Allah have mercy on him) that Ibn Abbas (may Allah be pleased with him) used to touch the Yemeni Corner and the Black Stone, while Ibn Zubair (may Allah be pleased with him) used to touch all the corners and would say: "Nothing from the House of Allah should be left out." And Ibn Abbas (may Allah be pleased with him) would say: "Indeed, for you in the Messenger of Allah ﷺ is the best example." (__QUR_33_21__)
Hadith Referenceمسند الإمام الشافعي / كتاب الحج / 964
Hadith Takhrijإسناده ضعيف لضعف موسى بن عبيدة الربذي أخرجه ابن أبي شيبة (14994) - وعبد الرزاق (8947)۔