[2817] As his sons left Egypt heading towards the Levant, Prophet Jacob (عليه السلام) sensed his long lost son’s smell from a distance (cf. al-Ṭabarī, al-Qurṭubī, Ibn Kathīr, Ibn ʿĀshūr). God Almighty inspired him so indicating thus that the difficult times were over (cf. al-Rāzī, Ibn ʿĀshūr).
[2818] Tufannidūn derives from fanad which means dotage or weakness of mind due to old age (cf. Ibn Qutaybah, Gharīb al-Qur’ān, Ibn Fāris, Maqāyīs al-Lughah, al-Iṣfahānī, al-Mufradāt).