Could you provide the exact translation and reference for the hadith in which Rasulullah (Sallallahu ‘alayhi wasallam) explained that hearts rust like iron rusts. When asked: “How can they be polished?” He (Sallallaahu ‘alayhi wasallam) replied, “Reciting Allah’s book and remembering Him much.”
There are several hadiths that discuss the polish for the heart.
1. Sayyiduna ‘Abdullah ibn ‘Umar (radiyallahu’anhuma) reports that Rasulullah (sallallahu’alaihi wasallam) said:
Indeed the hearts rust just as iron does. The Sahabah (radiyallahu’anhum) asked: “What is its polish?”
Rasulullah (sallallahu’alaihi wasallam) replied: “Abundant remembrance of death and recitation of the Quran”
(Shu’abul Iman, hadith: 1859 & Musnad Shihab, hadith: 1179)
The dhikr (remembrance) of Allah being a polish for the heart has been mentioned in another hadith:
2. Sayyiduna ‘Abdullah ibn ‘Umar (radiyallahu’anhuma) reports that Rasulullah (sallallahu’alaihi wasallam) said:
Everything has a cleaner, and the cleaner of the hearts is the remembrance of Allah…
(Shu’abul Iman, hadith: 519, also see Targhib, vol.2 pg.396 & Al-Mudawi, vol.2 pg.527)
This has also been recorded as the statement of Sayyiduna Abu Darda (radiyallahu’anhu) (Shu’abul Iman, hadith: 520)
3. Another hadith mentions Istighfar (seeking repentance) has the polish of the heart.
(Sunan Tirmidhi, hadith: 3334 & Al-Mu’jamus Saghir, see Sharhul Ihya, vol.4 pg.465)
And Allah Ta’ala Knows best,
Answered by: Moulana Muhammad Abasoomar
Checked by: Moulana Haroon Abasoomar