Not graded
Sunan ad-Darimi 519
أَخْبَرَنَا الْحَكَمُ بْنُ الْمُبَارَكِ حَدَّثَنَا أَبُو عَوَانَةَ عَنْ مُغِيرَةَ قَالَ كَانَ إِبْرَاهِيمُ لَا يَبْتَدِئُ الْحَدِيثَ حَتَّى يُسْأَلَ
This hadith has no English translation yet: the Arabic text, the reference and the grade are shown here.
Reported by Ad-Darimi (No. 519).