Surah Al-Furqan, ayah 67

وَٱلَّذِينَ إِذَآ أَنفَقُواْ لَمۡ يُسۡرِفُواْ وَلَمۡ يَقۡتُرُواْ وَكَانَ بَيۡنَ ذَٰلِكَ قَوَامٗا ٦٧

Walladhīna idhā anfaqū lam yusrifū walam yaqturū wakāna bayna dhālika qawāmā

And [they are] those who, when they spend, do so not excessively or sparingly but are ever, between that, [justly] moderate