Know, then, that the inhabitants of the graves—whether prophets or righteous saints—utterly abhor the practices performed at their tombs. Jesus, peace be upon him, detests what the Christians do in his name, just as the prophets of the Children of Israel loathed the deeds of their followers. A Muslim should therefore not imagine that the prohibition against turning graves into festival sites or idols diminishes their occupants; on the contrary, it is a form of honoring them. When hearts become absorbed in innovation, they inevitably turn away from the Sunnah. Hence you will find that most of those who devote themselves to graves are heedless of the Sunnah and way of the person buried there, preoccupied with his tomb instead of with what he commanded and called to.
Part of honoring the prophets and the righteous is to follow the righteous deeds to which they invited, so that their reward multiplies in proportion to the rewards earned by those who follow them—just as the Prophet, peace and blessings be upon him, said: “Whoever calls to guidance shall receive a reward equal to the rewards of all who follow him, without their rewards being reduced in the least.”
It is only because their hearts have turned away from what is prescribed—wholly or in part—that certain groups of people have become engrossed in a variety of innovated acts of worship: special invocations, poetic recitations, musical audition sessions, and the like. Their hearts have turned away, even if outwardly they still perform the prescribed rites. Yet whoever turns to the five daily prayers with both face and heart, mindful of the noble words and righteous actions they contain and giving them his fullest attention, will be spared any imagined need for other practices of the same sort.