Abu al-Tufail says that I was once with Sayyiduna Ibn Abbas and Sayyiduna Amir Muawiyah, may Allah be pleased with them. Whenever Sayyiduna Muawiyah, may Allah be pleased with him, passed by any corner of the Ka'bah, he would touch it. Sayyiduna Ibn Abbas, may Allah be pleased with them both, said that the Prophet (peace and blessings of Allah be upon him) used to touch only the Black Stone and the Yemeni Corner. Sayyiduna Muawiyah, may Allah be pleased with him, replied that no part of the House of Allah is to be neglected or abandoned.