It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that once he was performing Tawaf of the Ka'bah with Sayyiduna Amir Muawiyah (may Allah be pleased with him). Sayyiduna Amir Muawiyah (may Allah be pleased with him) began to touch all the corners of the Ka'bah. Sayyiduna Ibn Abbas (may Allah be pleased with them both) said to him, "Why are you touching these two corners when the Prophet (peace and blessings be upon him) did not touch them?" He replied, "No part of the Ka'bah can be left out." Upon this, Sayyiduna Ibn Abbas (may Allah be pleased with them both) recited this verse: «﴿لَقَدْ كَانَ لَكُمْ فِي رَسُولِ اللَّهِ أُسْوَةٌ حَسَنَةٌ﴾ [الأحزاب: 21] » "Indeed, in the Messenger of Allah (peace and blessings be upon him) you have an excellent example." Sayyiduna Muawiyah (may Allah be pleased with him) said, "You have spoken the truth."