Nasb-and-the-Nawasib

Al-Bukhārī says:
من صحب النبي صلى الله عليه وسلم أو رآه من المسلمين فهو من أصحابه
Any Muslim who accompanied Nabī H or saw him is from his
Companions. 1
The proofs for this stance being correct are the following:
Firstly, according to all the scholars of Arabic companionship does not have a
specific limit in language. 2 It is a common/gender noun which applies to two
things which share something in common, whether little or lot, literally or
metaphorically. 3
Consider the following verses:
مَ‏ ا ضَ‏ لاَّ‏ صَ‏ احِ‏ بُكُ‏ مْ‏ وَ‏ مَ‏ ا غَ‏ وٰ‏ ى
Your companion [i.e., Muhammad] has not strayed, nor has he erred. 4
مَ‏ ا بِصَ‏ احِ‏ بِكُ‏ مْ‏ مِّ‏ نْ‏ جِ‏ ناَّةٍ‏
There is not in your companion any madness. 5
وَ‏ مَ‏ ا صَ‏ احِ‏ بُكُ‏ مْ‏ بِمَ‏ جْ‏ نُونٍ‏
And your companion [i.e., Prophet Muhammad] is not [at all] mad. 6
1 Ṣaḥīḥ al-Bukhārī 3/1335.
2 Al-Kifāyah p. 51; al-Manhal al-Rawī p. 111; al-Taqyīd wa al-Īḍāḥ p. 296; Fatḥ al-Mughīth 3/93.
3 Al-Āmidī: Al-Iḥkām 2/104; Majmūʿ Fatāwā Shaykh al-Islām 4/464; al-Samīn al-Ḥalabī: ʿUmdah al-Ḥuffāẓ
2/320; Ibn al-Wazīr: al-ʿAwāṣim wa al-Qawāṣim 1/387.
4 Sūrah al-Najm: 2.
5 Sūrah al-Sabaʾ: 46.
6 Sūrah al-Takwīr: 22.
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