عَنْ عُمَرَ رَضِيَ اللَّهُ عَنْهُ أَنَّ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ قَالَ لَهُ: ((يَا عُمَرُ إِنَّكَ رَجُلٌ قَوِيٌّ لَا تُزَاحِمْ عَلَى الْحَجَرِ فَتُؤْذِيَ الضَّعِيفَ، إِنْ وَجَدْتَ خَلْوَةً فَاسْتَلِمْهُ وَإِلَّا فَاسْتَقْبِلْهُ فَهَلِّلْ وَكَبِّرْ))
It is narrated from Sayyiduna Umar (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) said to him: Umar! You are a strong man, so do not crowd at the Black Stone and cause hardship to the weak. If you find space, then perform Istilam; otherwise, face towards it and say: LAA ILAAHA ILLALLAH and ALLAHU AKBAR.