Can a devotee ask the Lord for material benedictions?
Sometimes, when there is no alternative, a pure devotee, being fully dependent on the mercy of the Supreme Lord, prays for some benediction. But in such a prayer there is also regret. One who always hears and chants about the transcendental pastimes of the Lord is always situated on a platform on which he has nothing to ask in terms of material benefits. Unless one is a completely pure devotee, one cannot enjoy the transcendental bliss derived from chanting and dancing in the ecstasy of the sankirtana movement.
Srimad Bhagavatam 8.3.20-21 purport