Remember the famous hadith from Volume 3 itself (Hadith No. 1596 in Kandemir’s edition): "Seeking knowledge is an obligation upon every Muslim." But the Prophet (PBUH) also taught honesty in all transactions, including how we acquire books.
A three-volume physical set is heavy and requires dedicated shelf space. A PDF file, however, allows a student of knowledge to carry the entire library in their pocket. Whether on a commute, at work, or traveling, the text is instantly available on a smartphone or tablet. riyazus salihin 3. cilt pdf