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.