The Peak of Eloquence · Hadith 2029 (#Passage #388)

٣١٥. وَقَالَ (عليه السلام) لِكَاتِبِهِ عُبَيْدِ اللَّهِ بْنِ أَبِى رَافِعٍ: أَلِقْ دَوَاتَكَ وَأَطِلْ جِلْفَةَ قَلَمِكَ وَفَرِّجْ بَيْنَ السُّطُورِ وَقَرْمِطْ بَيْنَ الْحُرُوفِ فَإِنَّ ذَلِكَ أَجْدَرُ بِصَبَاحَةِ الْخَطِّ.

315. Amīr al-mu’minīn, peace be upon him, said to his secretary ‘Ubaydullāh ibn Abī Rāfi‘: Put cotton flake in the ink-pot, keep the nib of your pen long, leave space between lines and close up the letters because this is good for the beauty of the writing.

Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).