From Ṣafwān ibn Yaḥyā, from someone who said to him: I asked Abū ʿAbdillāh (peace be upon Him): What does Allāh mean?
Imam (peace be upon Him) said: Alif means the mercy (آلاء) of Allah over His creation through the benefit of Our divine authority (Wilāyah); Lām means the obligation (إلزام) from Allāh upon His creations to Our divine authority (Wilāyah).
I asked: And Hāʾ?
Imam (peace be upon Him) said: Humiliation (هوان) for those who opposes Muhammad and the Family of Muhammad (may the blessings of Allāh be upon Them all)...¹
¹al Burhān fī Tafsīr al Qur'ān, v1, pg. 103