華嚴經義海百門 1.91

1.91

初、法供養者，謂以無生心中施一切珍寶，乃至微塵，皆能攝於法界，即以此法界一塵而作供養。以此供養，乃至遍通三世一切諸如來前，無不顯現。彼諸如來無不攝受。何以故？由塵即攝法界是理，與佛體性法界相應，是故遍至一切佛所，名廣大供養，無空過者，經云「諸供養中，法供養勝。」

First, the Dharma offering: Giving all precious jewels with a mind of anutpāda, down to a minute dust mote, can all subsume the dharmadhātu; one then takes this single dust mote of the dharmadhātu to make an offering. By means of this offering, extending everywhere before all Tathāgatas of the three periods of time, there is none where it does not manifest. Those Tathāgatas without exception receive it. Why? Because the dust mote subsuming the dharmadhātu is principle, which accords with the dharmadhātu of the Buddha's essence; therefore, it reaches everywhere to all buddhas' places. It is called the vast offering, none of which is made in vain. A sūtra says: 'Among all offerings, the Dharma offering is supreme.'