Any temporal reward
But it is not only the having an eye to the praise of men which cuts us off from any reward in heaven, which leaves us no room to expect the blessing of God upon our works, whether of piety or mercy. Purity of intention is equally destroyed by a view to any temporal reward whatever. If we repeat our prayers, if we attend the public worship of God, if we relieve the poor, with a view to gain or interest, it is not a whit more acceptable to God than if it were done with a view to praise. Any temporal view, any motive whatever on this side of eternity, any design but that of promoting the glory of God and the happiness of men for God's sake, makes every action, however fair it may appear to men, an abomination to the Lord (Proverbs 15:8).
1771 text
2. But it is not only, the having an eye to the praise of men, which cuts us off from any reward in heaven; which leaves us no room to expect the blessing of God, upon our works whether of piety or mercy. Purity of intention is equally destroyed by a view to any temporal reward whatever. If we repeat our prayers, if we attend the public worship of God, if we relieve the poor, with a view to gain or interest, it is not a whit more acceptable to God, than if it were done with a view to praise. Any temporal view, any motive whatever on this side eternity, any design but that of promoting the glory of God, and the happiness of men, for God’s sake, makes every action, however fair it may appear to men, an abomination unto the Lord.