Explained in Detail: Revelation the Meccans Refused

Fussilat ('Explained in Detail'), 54 Meccan verses, also called Ha-Mim Sajda, responds to the Meccans who said their hearts were veiled from the message. It points to the creation of the heavens and earth and to signs 'on the horizons and within themselves' (41:53) as evidence that the revelation is the truth.

Fussilat's alternative title, Ha-Mim Sajda, distinguishes it from six other surahs that also open with the letters Ha-Mim, a cluster the exegetical tradition treats as a deliberately grouped sequence, and its own title further marks it as one of the surahs containing a verse of prostration (41:37-38). The Meccans' claim that their hearts were veiled and their ears deafened to the message (41:5) is read by commentators as an assertion of wilful rather than genuine incapacity, since the surah goes on to describe skin and hearing testifying against such deniers on Judgement Day (41:20-23), a scene read as reversing their claimed deafness into an inescapable witness. The surah's closing appeal to signs 'on the horizons and within themselves' (41:53) is treated by later commentators, including some modern exegetes, as an open-ended invitation extending to ongoing discovery about creation, a reading its classical commentators applied more narrowly to observable natural and bodily phenomena available in their own time.