東方世尊阿閦如來也。楞嚴經五曰：「見東方不動佛國。」維摩經見阿閦佛品曰：「有國名妙喜，佛號無動。」
不動如來; 阿閦鞞 or 阿閦婆, Akṣobhya, one of the 五智如來 Five Wisdom, or Dhyāni-Buddhas, viz., Vairocana, Akṣobhya, Ratnasambhava, Amitābha, and Amoghasiddhi. He is especially worshipped by the Shingon sect, as a disciple of Vairocana. As Amitābha is Buddha in the western heavens, so Akṣobhya is Buddha in the eastern heaven of Abhirati, the realm of joy, hence he is styled 善快 or 妙喜, also 無瞋恚 free from anger. His cult has existed since the Han dynasty, see the Akṣobhya-Tathāgatasya-vyūha. He is first mentioned in the prajnapāramitā sutra, then in the Lotus, where he is the first of the sixteen sons of Mahābhijñā-jñānabhibhu. His dhyāni-bodhisattva is Vajrapāṇi. His appearance is variously described, but he generally sits on a lotus, feet crossed, soles upward, left hand closed holding robe, right hand fingers extended touching ground calling it as color is pale gold, some say blue a vajra is before him. His esoteric word is Hum; his element the air, his human form Kanakamuni, v. 拘. Jap. Ashuku, Fudo, and Mudo; Tib. mi-bskyod-pa, mi-'khrugs-pa (mintug-pa); Mong. Ülü küdelükci. v. 不動明王.
一不動佛 梵名 Akṣobhya-buddha 之意譯。音譯阿閦佛。教王經、略出經等所載之不動佛（或不動如來）係指東方之阿閦佛。大日經具緣品中所說之北方不動佛則非東方之阿閦佛，大日經疏卷四（大三九‧六二二下）：「次於北方觀不動佛，作離熱清涼住於寂定之相，此是如來涅槃智，是故義云不動，非其本名也，本名當云鼓音如來。」即阿閦為不動之義，指菩提心堅固不動。又天鼓雷音佛自涅槃寂定之義而言，亦稱為不動佛。（參閱「阿閦佛」4632）p1309