Bhagavad Gita · Karma Sannyasa YogaChapter 5, Shloka 23 (5.23)

Shankaracharya — "do not trust it until death". prāk … śarīra-vimokṣaṇāt ā maraṇāt — until death; why? Avaśyaṃbhāvi hi kāma-krodhodbhavo vegaḥ ananta-nimittavān hi saḥ iti yāvat maraṇaṃ tāvat na viśrambhaṇīyaḥ — the surge of desire and anger comes from countless causes, so until death do not trust (that it will not come again). His fine description:

• Desire: iṣṭe viṣaye śrūyamāṇe smaryamāṇe vā anubhūte sukha-hetau yā gardhiḥ tṛṣṇā — the craving for an object that causes pleasure, when it is experienced, heard of or remembered.
• Anger: pratikūleṣu duḥkha-hetuṣu … yo dveṣaḥ — aversion towards unfavourable things that cause pain.
• Bodily signs: the surge of desire — romāñcana-prahṛṣṭa-netra-vadanādi-liṅgaḥ (hair standing on end, shining eyes, a beaming face); the surge of anger — gātra-prakampa-prasveda-saṃdaṣṭoṣṭha-puṭa-rakta-netrādi-liṅgaḥ (a trembling body, sweat, bitten lips, red eyes).

Acharya Ramanuja. Śarīra-vimokṣaṇāt prāg iha eva sādhanānuṣṭhāna-daśāyām eva ātmānubhava-prītyā kāma-krodhodbhavaṃ vegaṃ soḍhuṃ niroddhuṃ yaḥ śaknoti — one who, already in the stage of practice, can hold back the surge out of love for the experience of the self; sa yuktaḥ ātmānubhavāya arhaḥ — is fit for the experience of the self; after death ātmānubhava-sukhaḥ saṃpatsyate.

The difference: Shankara — lifelong alertness (the enemy may return at any time); Ramanuja — love of the experience of the self is itself the power that holds back the surge.