Charak Samhita
अखण्डार्थंदृढबलोजातःपञ्चनदेपुरे। कृत्वाबहुभ्यस्तन्त्रेभ्योविशेषोञ्छशिलोच्चयम्॥३९॥
Total 41 chapters were added by Dridhabala. He collected the subject matter from different sources like picking up the grains, the completed the text in excellent form which is available today.
english translation
akhaNDArthaMdRDhabalojAtaHpaJcanadepure। kRtvAbahubhyastantrebhyovizeSoJchaziloccayam॥39॥
hk transliteration by Sanscript