Hadithcore
Mishkat al-Masabih, 4380

Ibn ‘Abbas said :

Eat what you like and wear what you like as long as two things miss you : prodigality and pride. Bukhari transmitted it in a chapter heading.

وَعَنِ ابْنِ عَبَّاسٍ رَضِيَ اللَّهُ عَنْهُمَا قَالَ: كُلْ مَا شِئْتَ وَالْبَسْ مَا شِئْتَ مَا أَخْطَأَتْكَ اثْنَتَانِ: سَرَفٌ وَمَخِيلَةٌ. رَوَاهُ الْبُخَارِيُّ فِي تَرْجَمَة بَاب

References1 variant
In-Book Reference
Book 22, Hadith 71