Researching a Hadith: "Teeth of a Comb"

The Hadith of the Teeth of the Comb

Sunni Version
In عربي (Arabic) script, then the transliteration of both phrases, each followed by its English translation:
االناس سواسيه كااسنان المشط
لافرق بين عربي ولا اعجمي الا بالتقوى

An nasu sawasi-yatan ka asnan il masht.
* People are equal like the teeth of a comb.

La farqa bayna `arabi wa la `ajami illa bi taqwa.
* There is no difference between Arabs and non-Arabs except in piety.

The Arabic, transliteration, and English for this was quoted in the following:
"The Shaykh’s Tears Clean His Mureeds," by Mawlana Shaykh Hisham Kabbani (07 November 2012 in Lefke, Cyprus), pub: 2012, Sufilive. Seeking a more classical reference. Leave a comment with any information.

In Shia Islam, the first phrase in Arabic is possibly from this source:  من لا يحضره الفقيه:٠٢٧٢/٤٠ (I used cifr as place-holder). In English: Man La Yahduru al Faqih, Vol 4, p 272. I found that reference in the following: دائرة المعارف الحسينية: العامل السياسي لنهضة الحسين - الجزء الأول - "The Hussaini Encyclopedia," Vol 1, by Mohammad Sadiq Al-Karbassi, pub London, 2007 by Hussaini Centre for Research, p 258

The first phrase, worded الناس كأسنان المشط سواء, was quoted in Sh Saduq's "Al Mawa'ith" (The Sermons), which is available online at http://www.en.islamic-sources.com/download/E-Books/Hadith/Al-Mawaaizh.pdf. The following endnote was offered: "Refer to Man La Yahduru al Faqih, Vol 4, p 378, hadith 5797; Bisharat al Mustafa, p 265; Jami' al Akhbar, p 93; Mishkat al Anwar, p 174; Rawdat al Wa'idin, p 469; Ibn Abi Hadid's Sharhu Nahj al Balagha, Vol 4, p 127 and Vol 13, p 316; and Bihar al Anwar, Vol 71, p 286, hadith 42."

Seeking a longer version of the hadith along with proper classical reference. Leave a comment.

A fuller version of the same quote from Shia Islamic hadith literature has been widely attributed to Imam Sadiq on the Internet, but without reference: "People are equal like the teeth of a comb. With the support of his brothers, a man can be regarded as great. No goodness is expected in the friendship of those who do not like for their friends whatever they like for themselves."

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Image below grabbed from https://www.behance.net/gallery/7420097/People-are-Equal-.  Dark grey comb bearing Arabic words "An-nas suwasiyatan." Words below in white: "ka as-snan al masht." Background: light blue mottled with brown, light purple, olive green.