the best of the prayers
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1 To offer the best of the prayers excluding the obligatory prayers
Abu Hurairah (May Allah be pleased with him) reported:
The Messenger of Allah, may peace and blessings of Allah be upon him, said, "The best month for observing Saum (fasting) after Ramadan is Muharram, and the best Salat after the prescribed Salat is Salat at night."
[Muslim]