While fingernails are not explicitly referenced in biblical texts, hands are frequently symbolic of action, purity, and one's deeds before God (e.g., Psalm 24:3-4, Isaiah 1:15-16). Fingernails, as the extremities of the hands, can be interpreted as representing the finer points of one's actions or the attention given to spiritual detail. Well-kept nails may symbolize diligence in faith and moral integrity, while neglected or damaged nails could indicate spiritual neglect, guilt, or the need for repentance. The act of cleaning or trimming nails may metaphorically align with the biblical call to cleanse oneself before approaching the divine, emphasizing preparation and humility.

In Buddhism, the body is regarded as a vessel for mindfulness and karma. Attention to fingernails signals awareness and respect for the present moment, aligning with the practice of right action (samma kammanta). Neglected or damaged nails may symbolize a lapse in mindfulness or self-care, while caring for them reflects loving-kindness (metta) towards oneself. However, excessive preoccupation with nail appearance may indicate attachment or vanity, which practitioners are encouraged to transcend in pursuit of non-attachment.

Culturally, fingernails carry a wide range of meanings. In some societies, long or decorated nails are symbols of status, beauty, or creativity, while in others, short and clean nails are associated with discipline and professionalism. Damaged or bitten nails may be seen as signs of anxiety or social discomfort. Nail grooming and decoration often serve as forms of self-expression and identity, reflecting broader cultural values around appearance, self-care, and social status.

In Hinduism, the body is seen as a sacred temple, and cleanliness—including nail care—is integral to ritual purity (saucha). Dirty or damaged nails may symbolize impurity or the accumulation of negative karma, while healthy, well-maintained nails reflect inner harmony and balance. Nail care is also linked to ahimsa (non-harm), since sharp or unkempt nails can inadvertently cause harm. Thus, attention to fingernails reflects one's commitment to both personal purity and non-violence.

Islamic teachings emphasize cleanliness as part of faith, and the Prophet Muhammad (peace be upon him) specifically included nail trimming among the natural practices (fitrah) (Sahih Muslim 261). In dreams, the state of fingernails can reflect one's spiritual and ritual purity. Long, dirty, or broken nails may suggest neglect of religious obligations or a need for spiritual renewal, while trimming or caring for nails signifies adherence to Sunnah, discipline, and a desire for both inner and outer purification. Damaged nails can also symbolize vulnerability in one's faith or a lapse in religious practice, serving as a call to return to spiritual discipline.

From a psychological perspective, fingernails in dreams often relate to self-image, boundaries, and coping mechanisms. Nail-biting or damage is commonly associated with anxiety, stress, or unresolved tension. Long or carefully decorated nails may indicate a desire for self-expression, control, or perfectionism. The state of the nails can mirror one's sense of personal security or vulnerability, with broken or falling nails pointing to feelings of powerlessness, exposure, or loss of control over one's circumstances.

Spiritually, fingernails can be seen as subtle shields, marking the boundary between the self and the external world. Their care or neglect may symbolize one's attention to energetic hygiene, spiritual boundaries, and personal integrity. Losing or damaging nails in dreams may indicate weakened spiritual defenses or a call to reinforce one's aura and self-protection practices. Conversely, healthy nails may reflect strong spiritual boundaries and a well-maintained sense of self.