TABARANI 9074:
from Ibn Masʿūd —
[Machine] Seek the night of Al-Qadr in the seventeenth, nineteenth, and twenty-first nights of Ramadan, during the pre-dawn of the day of Badr, the day of the great distinction, the day the two groups met. It cannot occur except in an odd-numbered night.
الطبراني ٩٠٧٤:
عن ابن مسعود —
الْتَمِسُوا لَيْلَةَ الْقَدْرِ لِسَبْعَ عَشْرَةَ خَلَتْ مِنْ رَمَضَانَ صَبِيحَةَ يَوْمِ بَدْرٍ {يَوْمَ الْفُرْقَانِ يَوْمَ الْتَقَى الْجَمْعَانِ} وَفِي إِحْدَى وَعِشْرِينَ وَفِي ثَلَاثٍ وَعِشْرِينَ فَإِنَّهَا لَا تَكُونُ إِلَّا فِي وِتْرٍ
hadithunlocked.com