al-Sharif al-Radi (d. 406 AH) · Thaqalayn library edition, reproduced verbatim
ثُمَّ تَفَقَّدْ مِنْ أُمُورِهِمْ مَا يَتَفَقَّدُهُ الْوَالِدَانِ مِنْ وَلَدِهِمَا، وَلَا يَتَفَاقَمَنَّ فِي نَفْسِكَ شَيْءٌ قَوَّيْتَهُمْ بِهِ، وَلَا تَحْقِرَنَّ لُطْفاً تَعَاهَدْتَهُمْ بِهِ وَإِنْ قَلَّ، فَإِنَّهُ دَاعِيَةٌ لَهُمْ إِلَى بَذْلِ النَّصِيحَةِ لَكَ، وَحُسْنِ الظَّنِّ بِكَ.
Strive for their matters as the parents strive for their child. Do not regard anything that you do to strengthen them as big nor consider anything that you have agreed to do for them as little (so as to give it up), even though it may be small, because this will make them your wellwishers and create a good impression of you.
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