If I had to pick one Mahayana text that covers every aspect of doctrine, path & results, I would suggest this one - in Sanskrit titled Mahayanasutralamkara. There are two excellent English translations, with commentaries. It is a large book with the commentaries, but those comments are needed to clarify these many altruistic verses One came out in 2014 done by the Dharmachakra translation group and the other from the Padmakara translators just came out late in 2018. The root text was taught to Asanga (a bodhisattva of the 5th century) by Maitreya a 10th stage bodhisattva, who will become in the distant future our next Buddha. Ornament of the Great Vehicle Sutras is the title of the Dharmachakra version. The Padmakara version is called A Feast of the Nectar of the Supreme Vehicle. Both are in epub versions also.