No blame in what Allah has made his duty.
The same way Allah treated earlier prophets
Ibn Kathir says this answers the hypocrites who imagined something wrong in the Prophet's marriage to Zaynab ﷺ. Allah never commanded earlier prophets to do anything blameworthy. His command, once decreed, comes to pass.
You make a choice that is fully halal, and the comments start. A relative frowns, a colleague asks a pointed question. You start to feel guilty for something that has no sin in it. Their discomfort is not Allah's verdict.
If people around me disapprove, I must be doing something wrong.
When Allah has allowed it, others' disapproval does not make it a fault.
If you carry guilt over a choice that is not a sin, say so to yourself and let it go.