“May Allah have mercy on the servant who points out my mistake and gifts me my faults; for—by His permission and aid—it is easy for me to retract an error once its true nature becomes clear. The books of mine that are printed for the first time, as well as those that are re-issued, stand as the greatest testimony to this.”

Among the examples I have come across that fall under this heading are:
(a) What he records in the introduction to the seventh edition of his book The Prophet’s Prayer Described (pp. 8–9) when discussing the treatise Tanbīhāt by our teacher, the distinguished scholar Ḥamūd b. ʿAbd Allah al-Tuwayjiri—may Allah have mercy on him.
(b) In Zilāl al-Jannah fī Takhrīj al-Sunnah, ḥadith no. 848—the report of Abū al-Dardāʾ concerning the one who hears the call to prayer—the Shaykh comments: “I do not know the ḥadith to which he is referring.”
In his personal copy he added: “It is narrated by al-Ṭabarānī from Abū al-Dardāʾ with a weak chain; see Majmaʿ al-Zawāʾid 1/333. ʿAbd Allah al-Duwaysh—may Allah have mercy on him—pointed it out to me, and may Allah reward him well.”
(c) In the same work, at ḥadith no. 1238, the chain of transmission originally reads: “Narrated to us: Abū Miskīn.”
In his personal copy he later wrote: “I have corrected this: the proper form is ‘Abū Makīn’; the same occurs in ʿIlal al-Dāraqutni, as Dr. Maḥfūẓ al-Raḥmān informed me in a book he sent through our brother ….” (1)

See also:
– The introduction to volume 1 of Silsilat al-Aḥādīth al-Ṣaḥīḥah (p. 5);
– The introduction to volume 6 of that same series (p. 8);
– The introduction to volume 5 of Silsilat al-Aḥādīth al-Ḍaʿīfah (pp. 11–12).

Thus we find that the Shaykh—may Allah have mercy on him—never hesitated to withdraw any ruling once an error became evident, thanking and appreciating whoever guided him to it.

(8) The variance of some of his rulings—may Allah have mercy on him—from one book to another, even regarding the same ḥadith.