It is narrated from Abu Tufail (may Allah have mercy on him) that Ibn al-Kawwa asked Sayyiduna Ali (may Allah be pleased with him) about al-Mujarrah. He replied: It is a gate in the sky; through this gate, the sky was opened with the forceful water that rained down upon the people of Noah.
Hadith Referenceالادب المفرد / كتاب الأقوال / 766
Hadith Gradingالألبانی:صحيح
Hadith Takhrij«صحيح : أخرجه ابوالشيخ فى العظمة : 790»
Explanation & Benefits
Shaykh Maulana Usman Muneeb
Benefits and Issues: Mujarra is that whiteness which appears in the sky and on both its sides there is light.
Source: Fadlullah al-Ahad: Urdu Commentary on al-Adab al-Mufrad, Page: 766