Shiva Purana
उत्तरोत्तरमेवं स्यात्पूर्वोक्तगणनाविधि । मतांतरमथो वक्ष्ये संख्यायां मुनिभेदतः १६ ।
Above this, more and more benefits accrue until the stipulated number is reached. I shall now mention another opinion coming from a different sage.
english translation
uttarottaramevaM syAtpUrvoktagaNanAvidhi । matAMtaramatho vakSye saMkhyAyAM munibhedataH 16 ।
hk transliteration by Sanscript